Carbureter.



N. F. GREEN.

CARBURETER.

APPLICATION FILED AUG.26, 1913. 1309386. Patented Oct. 10,1916.

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UNITED sT TEs' PATENT ornron.

NATHAN IE. GREEN, OF EAST HAVEN,

CONNECTICUT, ASSIGNOR TO GREENS PATTERN SHOP, INCORPORATED, OF NEWHAVEN, CONNECTICUT, A CORPORATION OF CON- NECTICUT.

CARBURETER.

Patented Oct. 10,1916.

Application filed August 26, 1913. Serial No. 786,765.

To all 4.0 7mm it may concern Be it known that I, NATHAN F. GREEN, acitizen of the United States, residing at East Haven, county of NewHaven, State of Connecticut, have invented an Improvement inCarbureters, of which the following is a specification.

This invention has for its object to provide a simple, inexpensiveand'fool-proof carbureter in which the danger of clogging shall bepractically eliminated, which may be easily and quickly cleaned, whichmay be connected up at any angle without the use of oifsets, elbows orotherconnecting parts and in which the air control shall be mechanicalinstead of automatic, thereby doing away with one of the most seriouscauses of trouble with carbureters as ordinarily constructed.

With these and other objects in view I have devised the novel structurewhich I will now describe, referring to the accompanying drawing forminga part of this specification and using reference characters to indicatethe several parts:

Figure 1 1s a central vertical section of my 3-3 in Fig. 1; looking inthe direction of the arrows; and Fig. 4 is an elevation of the throttlevalve detached.

10 denotes the casing which is provided with a cap 11 having threadedengagement therewith, and 12 the engine pipe which has threadedengagement with the cap and is locked in place at any requiredadjustment in the horizontal plane by a nut 13.

14 denotes the air pipe which is concentric with the casing and isformed'integral therewith or rigidly secured thereto. Within this pipeis the usual priming valve, indicated by 15. Within the casing andsurrounding the air pipe is a gasolene reservoir, indicated by 16.Gasolene, or other hydrocarbon, is admitted to the reservoir by means ofa pipe (not shown) attached to a hub 17. At the upper end of the hub isa valve seat which is engaged by a conical valve 18 which I term thegasolene valve. This valve is provided with a guide rod 19 which centersthe valve in gasolene port 20, with a groove 21 and with a shank 22which engages a socket in a spindle 23 which slides freely in a guide 24cast integral with the casing. This construction enables me to assembleand disassemble the parts readily and insures perfect centering of thevalve, at all times. The flow of gasolene into the reservoir isautomatically controlled by means of a float 25 in the reservoir fromwhich a two-armed lever 26 extends, said arms having their fulcrums inlugs 27 cast upon the casing. At the forward end of the arms -is aU-shaped connecting piece 28 which engages groove 21 in the gasolenevalve. When the gasolene or other hydrocarbon in the reservoir reachesits normal level, the fioat will be raised and lever 26 will act toclose the valve. \Vhcn the gasolene falls below the normal level thefloat Wlll fall and the lever will raise the valve and permit gasoleneto enter the reservoir agam. Above the air pipe is a carbureting chamber29, the walls of which are shown as formed integral with the cap. Thewalls of the carbureting chamber converge clownward and are extended toform a tube 30 which fits closely over the air pipe and is provided witha plurality of ducts 31 through which gasolene is drawn from thereservoir by means of the incoming air, and passes to the carburetingchamber.

32 denotes the mixture valve which seats upon the upper end of the airpipe and also upon the wall of the carbureting chamber. Valve 32 isprovided with a stem 33 having a thread with a steep pitch which hasengagement longitudinally with a post 34 within the engine pipe andshown as cast integral therewith.

35 denotes the throttle valve in the engine pipe and 36 the stem of saidvalve, to the upper end of which a lever 37 is attached. An operatingrod (not shown) is attached to an eye 38 on the throttle valve lever.The other arm of said lever is provided with a slot 39 in which a block40 is adapted to slide. 'The block is provided with a stud 41 and isengaged by a screw 42 which is held against longitudlnal movement androtation of which adjusts the block.

43 denotes a lever which is adjustably se- 7 After this, no adjustmentof the mixture valve is required but the mixture valve is operatedmechanically coincidently With the operation of the throttle valve.

This construction, it will be noted, permits the parts to be separatedand cleaned with the least possible inconvenience and also permits theengine pipe to be adjusted to any required position, without the use ofoffsets or elbows, by simply loosening nut 13 placing the engine pipe inthe required position and then tightening up the nut again, and by doingaway with automatic control of the mixture valve and controlling saidvalve mechanically in cooperation with the throttle valve I am enabledto produce a carburetor that is thoroughly reliable under allconditions.

Having thus described my invention I claim:

In a. carbureter, the combination with a reservoir, a cap thereover, andan air pipe Copies of this patent may be obtained for five cents each,by addressing the extending inward from the bottom thereof, of an enginepipe secured in an opening provided therefor in the cap, a tube ofgreater diameter than the air pipe depending from the cap having Wallsconverging toward and inclosing the air pipe provided with a pluralityof ducts about the air pipe, a post depending from the interior of theengine pipe above the center of the air pipe and tube extending Withinthe cap, a conical mixture valve carried upon a stem mounted forreciprocation within the post, said valve seating upon the convergingwalls of the tube and top of the air pipe, a throttle valve, and meansfor operating said valves coincidently.

In testimony whereof I aflix my signature in presence of two witnesses.

NATHAN F. GREEN. lVitnesses:

GEO. H. SIMMoNDs, NORMAN S. FOSTER.

Commissioner 01' ratentl.

Washington, D. 0.

